| 摘要 |
<p>A flexible belt (1-12) made of an elastomeric material, comprising an annular body, delimited by two base surfaces and by two lateral sides; at least one of the base surfaces can be disposed with a determined winding arc, around a pulley from which it receives or, to which it transmits motion by means of friction. The sides of the annular body, are inactive for transmitting the forces by means of friction. The belt that is, for example, flat, is extensible, and it comprises at least one group of three layers (2, 3, 4), in direct contact with one another, each one of which comprises fibres, disposed in a single predetermined direction. In the reinforcing structure, there are no inextensible cords present. The belt can comprise means (5-8), on at least one of the base surfaces, of the annular body, for contrasting any lateral shiftings relative to the pulley of the transmission.</p> |
